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Multiple Type Constraints in Swift
... Geez this isn't logical, but good to know I just want to be one of the thanks spammers for this one, havent' realised this in a month since I needed it.
– Mathijs Segers
Apr 28 '15 at 13:11
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Referring to the null object in Python
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In Python, the 'null' object is the singleton None.
The best way to check things for "Noneness" is to use the identity operator, is:
if foo is None:
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share
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im...
Importing modules from parent folder
... @Tyler - It can matter if somewhere else then the parentdir, but in one of the paths allready specified in sys.path, there is another module with the name 'mymodule'. Inserting the parentdir as the first element of the sys.path list assures that the module from parentdir will be imported inst...
What are the primary differences between TDD and BDD? [closed]
...omparison of BDD and TDD in this video. Also an opinion about BDD as "TDD done right" by Jeremy D. Miller
March 25, 2013 update
The video above has been missing for a while. Here is a recent one by Llewellyn Falco, BDD vs TDD (explained). I find his explanation clear and to the point.
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Protecting executable from reverse engineering?
...code from disassembly and reverse engineering. Normally I would never condone this behavior myself in my code; however the current protocol I've been working on must not ever be inspected or understandable, for the security of various people.
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Linux error while loading shared libraries: cannot open shared object file: No such file or director
... libfoo.so.1.0. And if you install version 1.1 without removing the other one, you'll have a libfoo.so.1.1, and libfoo.so.1 and libfoo.so will now point to the new one, but any code that requires that exact version can use the libfoo.so.1.0 file. Code that just relies on the version 1 API, but doe...
Java Generics Wildcarding With Multiple Classes
...eters section, at the bottom of the page. You can actually list more than one interface if you wish, using & InterfaceName for each one that you need.
This can get arbitrarily complicated. To demonstrate, see the JavaDoc declaration of Collections#max, which (wrapped onto two lines) is:
publ...
What is the shortest function for reading a cookie by name in JavaScript?
... as performant as the looping approach. The tests I'd run previously were done in Chrome, where the regex approach performed modestly better than other approaches. Nonetheless, it's still the shortest which addresses the question being asked.
– Mac
Aug 25 '14 a...
Connecting overloaded signals and slots in Qt 5
...mp;QSlider::setValue);
For Qt 5.6 and earlier, you need to tell Qt which one you want to pick, by casting it to the right type:
connect(spinbox, static_cast<void (QSpinBox::*)(int)>(&QSpinBox::valueChanged),
slider, &QSlider::setValue);
I know, it's ugly. But there's no wa...
How can i tell if an object has a key value observer attached
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Isn't here any other elegant solution? this one takes at least 2ms per usage... imagine it in a tableviewcell
– João Nunes
Oct 17 '12 at 14:01
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